Sawing-machine



(No Model.) 2 Sheets-Sheet I.

W. AyDEwBERRY.

. SAWING MAGHiNE. I

No. 380,386. Pateilted Apr. 3, 1888,

(No Model.) 2 Sheets-Sheet 2.

W. A. DEWBERRY.

. SAWING MAGHINB. No. 380,386. PatentedApr. 3, 1888.

QUOTA l c1 v a, PETERS. Pmlciitvognpimr, Wahngicm D c UNITED STATES PATENT @FFICE.

\VILLIAM ANDRE'YV DEVVBERRY, OF PEACE, ARKANSAS.

SAWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 380,386, dated April 3, 1888.

Application filed October 25, 1887. Serial No. 253,331. (No model.)

To aZZ whom it may concern:

Be it known that 1, WILLIAM ANDREW DEWBERRY, a citizen of the United States, residing at Peace, in the county of lVhite and 5 State of Arkansas, have invented certain new and useful Improvements in Sawing-Machines; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in machines for sawing various substancessuch as logs, timber, or stoneand has for its object to facilitate the operation and apply the power of the workman in the most advantageous manner. My machine can be made either stationary or portable, though the latter is the preferableform of construction. The machine is capable of being folded into small space for transportation; but when set up for use is strong and well braced. It can obviously be driven by hand or by horse power, water or steam.

My invention consists in certain combinations and arrangements of parts hereinafter described, and especially designated in the claims.

Referring to the accompanying drawings, Figure 1 is a perspective view of my machine set up for operating. Fig. 2 is a side elevation; Fig. 3, a detail of construction.

The same letters refer to corresponding parts in all the views.

The axle A, wheels B B, and tongue 0 are of the usual construction. On the axle are erected two posts, D D, united by a crosspiece, E. From one of the posts projects an arm, F, composed of two parts hinged together at f. A pair of staples, f, andabolt, F, hold the two parts of the arm F rigidlyin line. The outer end of the arm is provided with a series of holes, f to receive the tenons on the upper ends of the supporting posts or legs G G. A bar, H, secured to the leg G,

passes through a mortise in the leg G, and by means of a pin, h, thrust through a hole in the leg G and engaging one of a series of holes in the bar H, the legs may be adjusted to any desired distance apart. A diagonal brace, I, runs from the outer end of arm F to the farther end of the cross-piece E. This brace is provided with a hinge, t, as shown.

In the posts D D are journaled three shafts, J, K, and L. The upper shaft, J, maybe provided with a crank, J, and carries a gearwheel, lvL engaging with a pinion, N, on the shaft K. On the outer end of shaft K is allywheel, O, which may serve as a belt-pulley in case the machine is driven by a steam-engine or other motor, as indicated by the dotted lines in Fig. 2. This shaft K also carries a gear-wheel, P, engaging with a pinion, Q, on shaft L, on the outer end of which is acrankdisk, R, provided with several holes, r, at different distances from the shaft. A suitable wrist-pin is inserted in one of these holes, its position being determined by the amount of drag or travel to be imparted to the saw S, which is connected with the wrist-pin by a pitman, T. By means of this train of gearing a rapid reciprocating motion can be given to thesaw with a corresponding slow revolution of the crank J. The saw may, if desired, run through guides attached to the legs G G, as indicated by dotted lines in Fig. 1, or through slots in the legs themselves.

Since the pitman T is united to the saw by a loose joint, it is necessary to provide some support for these parts to keep them in line as nearly as possible. I attach to the pitman, near the saw, a rod, U, which is suspended from a lever, V, suitably fulcrumed in a forked upright, W, removably secured upon the arm F, in which is formed a slot, f, for the passage of the rod U. By means of the lever the rod can be lifted or dropped to raise or lower the pitman, according to the size of the log to be operated upon. This lever V is operated by a cord, X, which is attached to the lever and is wound upon a drum, Y, secured upon a short shaft, Z, mounted in suitable bearings on the post D. At one end of the drum Y is a set of cogs, y,with which a sliding latch, Y, engages when it is desired to lock the drum after winding up or unwinding a certain portion of the cord X. The drum may be turned by a crank, Z, or by a belt, a, running over a pulley, b, on the shaft J, and a loose pulley, c, on shaft Z.

By means of a bolt, d, sliding in a casing se- Y the shaft.

cured to the shaft and engaging with arecess, e, in the pulley, the pulley may be locked to A spring, 9, pressing against a pin, d, projecting from the bolt d,normally retains the bolt out of engagement with the pulley. After the bolt has been pushed into the recess 6 to lock the pulley to the shaft, the bolt is turned on its axis, carrying the pin d into a notch in the casing and retaining the bolt in that position. \Vhen the pulley c is thus locked to the shaft Z, the shaft and the drum can be revolved by the crank J, raising or lowering the saw to any desired extent.

Hinged to the back of the axle A is a table or platform, k, upon which the workman stands while operating the crank J. The legs of this platform are hinged to it, as shown, and it is provided with an eye, Z, to engage with a hook (not shown) on the post D, whereby it is held up out of the way when the machine is to be moved, the other parts of the machine being stowed away in the following manner: The saw is detached from the pitnnan T and slid into the loops 1 2 on the back of posts D 'D. Rod U is detached from the pitman and lever V from the forked upright W, which is then removed from arm F and placed in the box m, suspended from the axle. The brace I is detached from the arm F, folded on its hinge z, and then laid along the cross-piece E, where it is secured by the hook 3 and staple 4. The legs G G are removed from the holes f and hung from the cross-piece E by means of the hooks 5 and eyes 6. The bolt F being withdrawn from the staples f, the other end of the arm F is folded back and hooked to the eye 7. Pitrnan T is then hung upon the hook 8 by the eye 9. Lever V is laid upon the folded arm F and the end of rod U brought back and hooked upon the hook 10 by the eye 11. The various bolts and screws which may have been removed in separating the parts are placed in the box m. The machine is then in compact form for transportation.

Having described myinvention, whatIclaim, and desire to secure by Letters Patent. is-

l. In a portable sawing-machine, the comadj ustably secured to the other, and the brace I, extending from the arm F to the cross-piece E, substantially as described.

3. The combination, with the posts D D and the cross-piece E,having hooks 3 and 5 andstaple 4,0f the hinged arm F,having hook and eye 7, the hinged brace I, and the removable legs G G, having bar H and eyes 6, substantially as described.

4. In a portable sawing-machine, the combination, with the driving-shaft J, having'pulley b, of the shaft Z, having loose pulley c, the belt a, connecting the two pulleys, the bolt d, secured to the shaft Z and adapted to engage with the pulley c, the drum Y, mounted on the shaft Z, the cord X, wound upon the drum,the lever V, to one end of which the cord X is attached, and the rod U,attached to the other end of the lever and connected with the saw, substantially as described.

5. The cornbination,with axle A,having box. m,of posts D D, having loops 1 and 2,eye 7,and hooks 8 and l0,the cross-piece E,having hooks 3 and 5 and staple 4, the hinged arm F, having a hook, and hinged brace I, the removable legs G G, having bar H and eyes 6, the saw S, the

-crank-disk R, the pitman T, having eye 9, lever V, and rod U, having eye 11, and, the removable upright W,substantiall y as described.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM ANDREW DEWBERRY.

Witnesses:

J. D. GANFIELD, J. L. DEwBERnY. 

